Detachable point for power-shovel teeth.



' UNITED 'STATES' Q ATENT DFFIOE.

JOHN TREACY. oF sT. PAUL, MINNESOTA. I -DETAClr'lABLE POINT FOR-POWEFi-SHOVEL TEAE-TH.

N o. 802,178. Specification of Letters Patent. A Patented Oct. 12, 1905.

Application led May 9, 1905. Serial No. 259.606. l

T (017], '1011107111 Z' 777111Z/ COW/gern; 'I l project beyoqd the Sde's ofthe for lBe it known that I, JOHN TREACn-Of St. convenience in removing thepin or tighten-l PauLRamseycounty,Minnesota,.haveinvent ing it. Whcnever'desired this point can be 'ed certain new and useful Improvemjents in easily andquioklydetached from the tooth'o Detachable Points for Power-Shovel-Teeth, of and sharpened or a newpoint substituted which the following is a specificati? "fly therefor. Vihen .the point is putin place on The object of my invention is b'iidvide a 'the tooth, it will be held firmly between the powershovel or scoop tooth pointwhich can be tapered walls'of the vertical socket and the easily and quickly removed from the' tooth for long bearing-surfaces of the tooth on the point A6 5 1 0 shanpening purposes or in case of breakage. uponeach side of the web, and vertical oscil- Afurtherobject isv to provide a tooth-point lation of the. 'poin.tl will be prevented, 'and at that will not work loose even when subjected the same time the-endof the tooth will brace to a severe strain. and support the point when the'shovel isgin use.

The invention consists generally in various I claim as my-invention- 7 constructions and combinations; all as herein-` 1. A shovel-.tooth havingasocketin its end after described, and particularly pointed out tapering from oneend vto the other, anda dein the claims. tachable point-having a'web on one end. and In the accompanying drawings, forming a tapered tongue fitting within. said socket, part of this specification-Figure lis a plan substantiallyas described. 75 2o view of a power-shovel tooth with my im- 2. A shovel-tooth havingavertcal ket proved point applied thereto. Fig.2isalonin' its end tapered from thetop towa the gitudinal section through the end ofthetooth bottom of the. tooth, and a detachable pointv z and point. Fig.' 3 is a transverse section on having a vertical web on one end that termi- L the linev o; .fr of Fig. 1. Fig. 4 is a. transverse nates in a tonguetapered from .'.fitsupper to- 8o` section on theljney y of Fig. 2, and Fig. 5 wardits lower end and adapted toentersaid is a side view showing the point detached socket and lit snugly-therein,substantiallyas from the tooth. l described.

In the drawings, 2 representsA the upper 3. Ashovel-tooth havingasocketin'itsend shank of the tooth, and 3 the lower one, bein combination with adetachable point having 85 3o tween which is a s'lot 4 to receive the cutting a web on one end and a tongue to enter'said edge of the power-shovel bucket or coop. socket, the end of said tooth having a broad (Not shown.) Holes 5 are provided in said bearingfsurfce on said point upon each side shankpthrough which rivets` pass to secure of said web'whereby said .point is braced and the tooth on the bucket. The forward end of strengthened, substantially as described. 9'o the tooth projects beyond the cutting edge of 4. A shovel-tooth having-'a verticalsocket the bucket and is provided with a vertical in its-end tapered -froml the top toward the socket 6, gradually decreasing in area from bottom-in' combination withadetachable point the top toward the bottom of the tooth. having a web on one end 'and a tongue tapered i represents the tooth-point, having preffrom thetop toward the bottomad adapted 95 4o erably an under face which forms a continuvto enter 'said' socket and fit snugly therein,l f ation of the shank and a beveledupper .face and the 'end of said tooth having a. broad ver-V tapering to a point. A web 8 is provided on vticalbearing-surface on said point upbpeach one end ot' said point, having aatits end a side o f saidweb,and a removable'pin p' hng' tongue -9, which is substantial ,veircular in through said tooth and web, for the puip'ose 10 cross-section and tapered fromm top toward specified.

the bottom of the point'andzadapted to enter 5. A shovel-.tooth having a vertical socket" the socket 6 and fit snugly therein, and presin its'endfltapering fromthe top toward the sure on the beveled upper surface of the point bottom, and adetachable point having a tawill serve to wedge it more iirmlyin the toothperedtongue to lit within said socket, sub- 105 socket. To prevent accidentalseparation of stantially as described. l l

the point from the tooth,- I provide a hole 10'. VIn witness whereof I have hereunto set my in the web 8, adapted to'coincide with simihand this 3d day of May, 1905. lar holes 11 in the tooth, and these holes pre- 1 JOHN TREAGY. erably decrease in area from one side of the Witnesses: 1 tooth to the other and are adapted to receive A. C. PAUL,

5a tapered pin l2, the ends of which prefer- FRANK TIH'IN. 

